Celestia Forums

Hello,

I'm starting to play with this wonderful piece of software, and I found a little problem: animations produced by scripts (movements, rotations, ecc.) produce a strange "flicker". It seems that, every 4-5 frames, some "older" frames are drawn between.

This only happens with script animations (including the startup one), and not when I use the mouse to move/rotate my view.

I'm using Celesta 1.4.1, I have a Geforce 7600GT video card and a pretty decent computer (Athlon64 3600x2, 2GB ram, fast RAID0 disks). Latest nVidia forceware installed, also tried to disable hardware acceleration in control panel: same behaviour.

It would be wonderful to resolve this little issue, in order to enjoy the journey scripts that can be found in the net

Thank you very much for any help
Cosma

(OpenGL info output)

Vendor: NVIDIA Corporation
Renderer: GeForce 7600 GT/PCI/SSE2/3DNOW!
Version: 2.0.3
Max simultaneous textures: 4
Max texture size: 4096
Point size range: 1.000000 - 63.375000

Supported Extensions:
GL_ARB_color_buffer_float
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_half_float_pixel
GL_ARB_imaging
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_shadow
GL_ARB_shader_objects
GL_ARB_shading_language_100
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_dot3
GL_ARB_texture_float
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_non_power_of_two
GL_ARB_texture_rectangle
GL_ARB_transpose_matrix
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_ATI_draw_buffers
GL_ATI_texture_float
GL_ATI_texture_mirror_once
GL_S3_s3tc
GL_EXT_texture_env_add
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_compiled_vertex_array
GL_EXT_Cg_shader
GL_EXT_depth_bounds_test
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_object
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_pixels
GL_EXT_pixel_buffer_object
GL_EXT_point_parameters
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_texture3D
GL_EXT_texture_compression_s3tc
GL_EXT_texture_cube_map
GL_EXT_texture_edge_clamp
GL_EXT_texture_env_combine
GL_EXT_texture_env_dot3
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_lod
GL_EXT_texture_lod_bias
GL_EXT_texture_mirror_clamp
GL_EXT_texture_object
GL_EXT_texture_sRGB
GL_EXT_timer_query
GL_EXT_vertex_array
GL_IBM_rasterpos_clip
GL_IBM_texture_mirrored_repeat
GL_KTX_buffer_region
GL_NV_blend_square
GL_NV_copy_depth_to_color
GL_NV_depth_clamp
GL_NV_fence
GL_NV_float_buffer
GL_NV_fog_distance
GL_NV_fragment_program
GL_NV_fragment_program_option
GL_NV_fragment_program2
GL_NV_half_float
GL_NV_light_max_exponent
GL_NV_multisample_filter_hint
GL_NV_occlusion_query
GL_NV_packed_depth_stencil
GL_NV_pixel_data_range
GL_NV_point_sprite
GL_NV_primitive_restart
GL_NV_register_combiners
GL_NV_register_combiners2
GL_NV_texgen_reflection
GL_NV_texture_compression_vtc
GL_NV_texture_env_combine4
GL_NV_texture_expand_normal
GL_NV_texture_rectangle
GL_NV_texture_shader
GL_NV_texture_shader2
GL_NV_texture_shader3
GL_NV_vertex_array_range
GL_NV_vertex_array_range2
GL_NV_vertex_program
GL_NV_vertex_program1_1
GL_NV_vertex_program2
GL_NV_vertex_program2_option
GL_NV_vertex_program3
GL_NVX_conditional_render
GL_SGIS_generate_mipmap
GL_SGIS_texture_lod
GL_SGIX_depth_texture
GL_SGIX_shadow
GL_SUN_slice_accum
GL_WIN_swap_hint
WGL_EXT_swap_control

Cosma wrote:Hello, I'm starting to play with this wonderful piece of software, and I found a little problem: animations produced by scripts (movements, rotations, ecc.) produce a strange "flicker". It seems that, every 4-5 frames, some "older" frames are drawn between. This only happens with script animations (including the startup one), and not when I use the mouse to move/rotate my view. I'm using Celesta 1.4.1, I have a Geforce 7600GT video card and a pretty decent computer (Athlon64 3600x2, 2GB ram, fast RAID0 disks). Latest nVidia forceware installed, also tried to disable hardware acceleration in control panel: same behaviour. It would be wonderful to resolve this little issue, in order to enjoy the journey scripts that can be found in the net
Thank you very much for any help

Cosma, I found a very similar error in 1.4.1, but after some checks I found that the problem was the Orbits ON command.
When disabled, the flickering disappeared.
Anyhow this problem, at least for me, is no more present in the 1.5.pre3 release. even with Orbits ON.
Give a try, and inform us on the results, please.
Bye

Andrea

Ciao Andrea

thanks for the reply, I'm downloading the 1.5.0pre3 version right now and I'll give it a try, however my problem wasn't related to the ORBIT setting.

Cosma

Installed 1.5.0pre3, problem still there

Double checked the ORBIT thing, and also played with all the other view options, it didn't seems that those checkmarks may affect this behaviour in any way.

BTW, just out of curiousity, that "158.22" number in your signature is the read speed? If so, how did you benchmarked it?

Cosma wrote:BTW, just out of curiousity, that "158.22" number in your signature is the read speed? If so, how did you benchmarked it?

No, it is the number of Forceware driver and you can download it (WHQL) if you have the same graphic card under WinXp

PS: the 162.18 (BETA) is available here for WinXp

Ah, ok no, I have a 7600GT with 94.24 drivers.

Cosma wrote:Ciao Andrea thanks for the reply, I'm downloading the 1.5.0pre3 version right now and I'll give it a try, however my problem wasn't related to the ORBIT setting. Cosma

You are welcome.
Sorry it didn't solve your problem, but probably the new nVidia drivers can give their help, hope for you.
Good luck!

Andrea

AFAIK, the 1xx drivers are for newer 8x00 series cards.. the 94.24 should be the latest WHQL drivers for mine.

Thanks anyway for the help, guys.